Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
16008excellentexcellent21excellent
150011excellentexcellent21excellent
140011excellentexcellent21excellent
13009excellentexcellent21excellent
120014excellentexcellent21excellent
110014excellentexcellent21excellent
100018excellentexcellent31excellent
090026goodexcellent41excellent
080036goodexcellent61excellent
070059goodexcellent71excellent
060053goodexcellent71excellent
050063lightly pollutedexcellent81excellent
040058goodexcellent81excellent
030060goodexcellent81excellent
020070lightly pollutedexcellent101excellent
010068lightly pollutedexcellent71excellent
000069lightly pollutedexcellent81excellent
230071lightly pollutedexcellent71excellent
220056goodexcellent61excellent
210029goodexcellent51excellent
200025goodexcellent41excellent
190026goodexcellent41excellent
180023goodexcellent31excellent
170020excellentexcellent31excellent